I'd like to get an electronic list of occupations/professions/jobs in English, like "doctor," "cowboy," "assistant to the regional manager," etc.
I can't quite find this in the WordNet hierarchy (strangely, there are "professions," but that only has a few occupations listed), and I tried the historical thesaurus, but with no luck.
Are there other resources for machine-readable hierarchical thesaurus-like lexicons?